JP3413682B2 - Microphone mounting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microphone mounting device used for mounting a microphone capable of recording in an electronic device such as a tape recorder, and particularly for providing a small microphone on the outer peripheral portion of the device housing. A microphone mounting device suitable for use.

[0002]

2. Description of the Related Art A conventional microphone mounting device 50.
As shown in FIGS. 6 and 7, a microphone unit 51, a storage case 52 that stores the microphone unit 51 therein, and a cushion plate 55 that supports the microphone unit 51 and the storage case 52 are provided.
And a housing 56 provided with an opening for accommodating the storage case 52, and an opening 5 facing the bottom surface side of the storage case 52.
2A is provided, and is composed of a support plate 57 that sandwiches the cushion plate 55 with the housing 56.

A microphone capsule having a microphone element is mounted inside the microphone unit 51, and is supported by a cushion plate 55 so as to be displaceable.

The cushion plate 55 is made of, for example, rubber or the like, and has an opening 55A at a substantially central portion thereof. The cushion plate 55 includes a substantially cylindrical microphone holding portion 55 at a substantially central portion of the opening 55A.
B is provided, and the first support protrusion 55 that connects the outer peripheral portion of the microphone holding portion 55B and the opening 55A.
C to fourth support protrusions 55F are integrally formed so as to protrude.

The microphone unit 51 is housed in the microphone holding portion 55B of the cushion plate 55 and is displaceably supported by the first supporting protrusion 55C to the supporting protrusion 55F.

A first mounting portion 55G and a second mounting portion 55H are integrally formed on the outer peripheral portion of the cushion plate 55 so as to project therefrom. The cushion plate 55 includes the first mounting portion 55G and the second mounting portion 5
Positioning holes 55J and 55K are formed in 5H, respectively.

The storage case 52 includes a first storage case 53 that covers the sound collecting portion side of the microphone unit 51, and a second storage case that covers the bottom surface side of the microphone unit 51 in combination with the first storage case 53. And a case 54. The first storage case 53 is formed of a synthetic resin material such as plastic into a substantially rectangular tubular shape, and is provided with a sound emitting panel 58 that closes one opening 53A and faces the sound collecting portion of the microphone unit 51. Has been. The sound emitting panel 58 has a plurality of sound emitting holes 58A formed on the main surface thereof and corresponding to the sound collecting portions of the microphone unit 51. The second storage case 54 is formed of a synthetic resin material such as plastic into a substantially rectangular plate shape, and has a groove 54A recessed at a substantially central portion.

The first storage case 53 and the second storage case 54 are provided with assembly screw holes 53D and 54B at positions corresponding to each other. Then, the first storage case 53 and the second storage case 54 are assembled by screwing the assembly screws 59 into the assembly screw holes 53D and 54B with the outer peripheral portion of the cushion plate 55 being sandwiched and assembled. ing.

The housing 56 is provided with an opening portion 56A in which the storage case 52 is arranged, and the holding portions 56B and 56C are integrally formed in the opening portion 56A so as to project. In addition, positioning pins 56D,
56E are integrally formed so as to project.

The support plate 57 is made of a metal material and has an opening 57A facing the bottom surface of the second storage case 54. The cushion plate 55 has an outer peripheral portion sandwiched by the sandwiching portion 56B of the housing 56 and the opening edge portion of the support plate 57.

The conventional microphone mounting device 50 described above is the same as the microphone holding structure in the tape recorder disclosed in Japanese Utility Model Publication No. 4-031500.

[0012]

In the conventional microphone mounting device 50 described above, as shown in FIG. 7, the outer peripheral portion of the storage case 52 and the cushion plate 5 are provided.
A gap is formed between the opening 56 </ b> A of the casing 56 that holds 5 and the gap 5 is not completely closed by the cushion plate 55. That is, the microphone unit 51 uses the cushion plate 55 for the second
The drive mechanism and the like mounted on the bottom surface side of the storage case 54 are not completely blocked.

Therefore, the microphone mounting device 50 of the microphone mounting device 50 has a vibration sound generated by the rotating operation of the drive motor, gears and the like mounted on the bottom side of the second storage case 54 and a running sound of the magnetic tape in the tape cassette. Leaks from the gap between the storage case 52 and the opening 52A of the housing 52.

For this reason, the microphone mounting device 50
The microphone unit 51 picks up a vibration sound or the like that leaks from the gap between the storage case 52 and the opening 52A of the housing 52 and goes around to the sound collecting portion side of the microphone unit 51. Therefore, the microphone unit 51 has a problem in that a vibration sound or the like is recorded as vibration noise and good recording cannot be performed.

Therefore, according to the present invention, vibration noise and the like can be reduced to enable excellent recording of only external sound, and the displacement of the storage case can be regulated to reliably prevent the microphone from falling off. An object of the present invention is to provide a microphone mounting device.

[0016]

In order to achieve the above-mentioned object, a microphone mounting apparatus according to the present invention is provided with a microphone unit, a housing case for housing the microphone unit therein, and a first unit for supporting the microphone unit. Second elastic support member for supporting the storage case
Elastic supporting member, a supporting member provided with an opening in which the storage case is disposed, an opening facing the bottom surface side of the storing case, and the second elastic support member sandwiched by the supporting member. And a regulation member provided corresponding to the storage case and the support member to regulate the displacement amount of the storage case. Further, the first elastic support member and the second elastic support member are integrally formed.

[0017]

In the microphone mounting device according to the present invention having the above-described structure, the second elastic support member closes the gap formed between the storage case and the opening of the support member, and thus the support is provided. The transmission of vibration noise and the like from the opening of the member is blocked. That is, in the microphone mounting device, the vibration sound is prevented from flowing into the microphone unit through the opening.

The mounting device for this microphone is
When the storage case is displaced by elastically deforming the second elastic support member, the regulation member provided on the displaced storage case and the regulation member provided on the support member come into contact with each other or are stored. The displacement amount of the storage case is regulated by the regulation member provided on the case coming into contact with and engaging with the opening edge portion of the support plate.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A microphone mounting device 1 for a portable tape recorder 20 according to a specific embodiment of the present invention will be described below with reference to FIGS. In this portable tape recorder 20, a microphone mounting device 1 is provided between a cassette holder substrate 10 that constitutes a cassette holder for inserting and removing a tape cassette (not shown) and a cassette holder lid 9 that covers the cassette holder substrate 10. It is arranged.

The portable tape recorder 20 shown in FIG.
As shown in FIG. 3, an operation button group 21, a speaker slit 22, a display window 23, and a cassette confirmation window 24 are provided on the main surface of the cassette holder lid 9. As shown in FIG. 2, the microphone mounting device 1 is provided adjacent to a tape cassette (not shown) that is attached to and detached from the cassette holder.

The microphone mounting device 1 according to the embodiment has substantially the same basic structure as the conventional microphone mounting device 50, and generally includes a microphone unit 3 and a housing case 5 for housing the microphone unit 3 therein.
A cushion plate 4 for respectively supporting the microphone unit 3 and the storage case 5, a cassette holder lid 9 provided with an opening 9A in which the storage case 5 is disposed,
The cassette holder substrate 10 is provided with an opening 10A facing the bottom surface side of the storage case 5 and sandwiching the cushion plate 4 with the cassette holder lid 9.

The cassette holder lid 9 is provided with an opening 9A in which the storage case 5 is arranged.
A sandwiching portion 9B corresponding to the outer shape of the cushion plate 4 is integrally projectingly formed on the outer peripheral portion of A. The cassette holder lid 9 has a first positioning pin 9C and a second positioning pin 9D integrally formed on the holding portion 9B so as to project therefrom, and the first positioning pin 9C and the second positioning pin 9D are formed. A third positioning pin 9E and a fourth positioning pin 9F are formed integrally with each other so as to face each other.

Further, the cassette holder lid 9 is formed integrally with a substantially arc-shaped displacement restricting piece 9G adjacent to the opening 9A. Furthermore, the cassette holder lid 9 has
The housing 11 is provided on the outer peripheral side.

The cassette holder substrate 10 is made of a metal material and has an opening 10A corresponding to the bottom surface of the storage case 5. A first positioning hole 10B and a second positioning hole 10C are formed in the cassette holder substrate 10 in the vicinity of the opening 10A, and the first positioning hole 10B and the second positioning hole 10B are formed.
The third positioning hole 1 facing the positioning hole 10C of
OD and the fourth positioning hole 10E are provided respectively.

The storage case 5 is the microphone unit 3
It is composed of a first storage case 6 that covers the sound collecting portion side of the above, and a second storage case 7 that covers the bottom surface side of the microphone unit 3. In the first storage case 6, an annular holding portion 6C is integrally formed on a main body portion 6A formed of a synthetic resin material such as plastic in a substantially disc shape.

The first storage case 6 has a body portion 6A.
An opening is formed in the opening, and a sound emitting panel 6B that closes the opening is provided. This sound emitting panel 6B is
It is formed in a disc shape, and a plurality of sound output holes 12 are formed on the main surface.

In the first storage case 6, a substantially columnar first assembly portion 6D and a second assembly portion 6E are integrally formed on the outer peripheral portion of the holding portion 6C so as to project integrally. In addition, the first assembling portion 6D and the second assembling portion 6E
The first mounting protrusion 6F and the second mounting protrusion 6G, which are substantially columnar and have a height dimension substantially equal to the thickness dimension of the cushion plate 4, are integrally formed on the base plate.

Further, the first assembling projection 6F and the second assembling projection 6G are provided with a first assembling hole 6H and a second assembling hole 6I, respectively. Further, in the first storage case 6, a first engagement pin 6J and a second engagement pin 6K are integrally formed on the inner peripheral wall of the holding portion 6C so as to project.

The second storage case 7 is formed of a synthetic resin material such as plastic into a substantially rectangular plate shape, and a groove portion 7A is formed on the main surface thereof. In the second storage case 7, the first engagement hole 7B and the second engagement hole 7B are formed in the inner wall of the groove portion 7A.
7C of the engaging holes are formed respectively.

Further, the second storage case 7 is provided with a substantially fan-plate-shaped first displacement regulating piece 7D and second displacement regulating piece 7E integrally formed on the outer peripheral portion thereof. These first
The displacement regulating piece 7D and the second displacement regulating piece 7E of
The assembling hole 7F and the second assembling hole 7G are formed respectively.

The cushion plate 4 is formed of a material having a sound insulating property having a resonance frequency lower than the lowest resonance frequency of the microphone unit 3, such as rubber. In this cushion plate 4,
As shown in FIGS. 3 and 4, an opening 4A is provided at a substantially central portion, and a substantially cylindrical microphone holding portion 4B is provided at the central portion of the opening 4A.

In the microphone holding portion 4B, a substantially fan-shaped first holding projection piece 4C and a second holding projection piece 4D are integrally formed at the opening end on the bottom surface side. The microphone unit 3 is housed in the opening of the microphone holding portion 4B and held by the first holding projection piece 4C and the second holding projection piece 4D.

Then, in the cushion plate 4, the first supporting piece 4E to the third supporting piece 4 which connect the outer peripheral portion of the microphone holding portion 4B to the opening 4A and the opening 4A.
G is integrally formed. Therefore, in the cushion plate 4, the microphone holding portion 4B is supported so as to be displaceable by the first supporting piece 4E to the third supporting piece 4G.

Further, in the cushion plate 4, a groove portion 4S corresponding to the holding portion 6C of the first storage case 6 is recessed in the outer peripheral portion of the opening 4A. Then, the cushion plate 4 is provided with a first mounting hole 4H and a second mounting hole 4I, which face each other in the groove portion 4S.

Further, the cushion plate 4 has a first
A first engaging hole 4J and a second engaging hole 4K are formed in the base end portions of the supporting piece 4E and the second supporting piece 4F, respectively. In addition, the cushion plate 4 has a first outer peripheral portion.
Positioning holes 4L and second positioning holes 4M are formed respectively, and the first positioning holes 4L and the second positioning holes 4M are formed.
Third positioning hole 4N facing the positioning hole 4M
And a fourth positioning hole 4P are formed respectively.

Further, the cushion plate 4 is provided with a wiring hole 4T on the outer peripheral portion thereof.
A wire (not shown) connected to the microphone unit 3 is drawn from the.

The microphone unit 3 is formed in a substantially cylindrical shape, and a microphone capsule having a microphone element (not shown) is mounted inside. And
This microphone unit 3 includes a cushion plate 4
It is displaceably supported by.

Then, the first storage case 6 and the second storage case 7 are assembled by sandwiching the cushion plate 4, and the first mounting screw 8A and the first mounting screw 8A and the first storage screw 8A are attached from the bottom surface side of the second storage case 7. It is screwed and fixed by the two assembling screws 8B.

The operation of restricting the displacement amount of the storage case 5 in the microphone mounting device 1 configured as described above will be described. First, when the portable tape recorder 20 is carried, the storage case 5 is pushed in by a large external force applied from the sound collecting portion side of the microphone unit 3, the cushion plate 4 is elastically deformed, and the second storage is obtained. It is displaced to the bottom surface side of the case 7.

When the storage case 5 is displaced, the first displacement restricting piece 7D and the second displacement restricting piece 7E, which are respectively formed on the outer peripheral portion of the second storage case 7, are attached to the cassette holder substrate 10. Abutting and engaging with the opening edges, respectively. Therefore, the amount of displacement of the storage case 5 due to elastic deformation of the cushion plate 4 is restricted.

Next, in the storage case 5, when the tape cassette is attached to and detached from the cassette holder, a large external force is accidentally applied from the bottom surface side of the second storage case 7 by a finger or the like so that the cushion plate 4 is elastic. It deforms and is displaced to the sound emitting panel 6B side of the first storage case 6.

When the storage case 5 is displaced, the first displacement restricting piece 7D and the second displacement restricting piece 7E, which are formed on the outer peripheral portion of the second storage case 7, respectively, are replaced by the cassette holder lid 9. The displacement regulating pieces 9 </ b> G formed in the above are respectively brought into contact with and engaged with each other. Therefore, the amount of displacement of the storage case 5 due to elastic deformation of the cushion plate 4 is restricted.

As described above, the microphone mounting apparatus 1 of the embodiment is held by the holding portion 9B of the cassette holder lid 9 along the outer peripheral portion of the cushion plate 4, so that the storage case 5 is held by the cushion plate 4. The gap between the cassette holder lid 9 and the cassette holder lid 9 is closed. Therefore, the microphone mounting device 1
Is reliably shielded from the vibration noise of the drive motor mounted on the bottom surface side of the second storage case 7, so that the microphone unit 3 can perform good recording of only external sound.

In the microphone mounting device 1, the first displacement restricting piece 7E and the second displacement restricting piece 7F of the second storage case 7 are respectively formed so that the first displacement restricting piece 7E is formed.
When a large external force is applied to the housing case 6 from the sound collecting portion side of the microphone unit 3, the first displacement restricting piece 7E and the second displacement restricting piece 7F engage with the cassette holder substrate 10, respectively. Therefore, the storage case 5
The amount of displacement is regulated, and damage such as dropping out is reliably prevented.

Further, the microphone mounting device 1 is
When a large external force is applied to the second storage case 7 from the bottom surface side by forming the displacement restriction piece 9G on the cassette holder lid body 9, the displacement restriction piece 9G is provided with a first external force of the second storage case 7. Displacement restricting piece 7E and second displacement restricting piece 7
F are engaged with each other. Therefore, the displacement amount of the storage case 5 is regulated, and the storage case 5 is reliably prevented from falling off.

Although the microphone mounting device 1 according to the present embodiment is provided on the cassette holder lid 9 of the portable tape recorder 20, it is not limited to the cassette holder lid 9 and may be, for example, another. It may be provided in the housing of the electronic device or the like.

[0047]

As described above, according to the microphone mounting device of the present invention, the gap formed between the housing case and the supporting member is closed by the second elastic supporting member, so that the microphone is mounted. It is possible to surely prevent the unit from being adversely affected by vibration noise or the like on the bottom surface side of the storage case. Therefore, in this microphone mounting device, the microphone unit can record only the external sound satisfactorily, and the reliability thereof is significantly improved.

Further, according to the microphone mounting device of the present invention, since the accommodation case and the supporting member are provided with the restricting members corresponding to each other, the displacement amount of the accommodation case by the second elastic support member can be reduced. Since it is regulated, the storage case is surely prevented from falling off.

[Brief description of drawings]

FIG. 1 is a perspective view showing a portable tape recorder to which a microphone mounting device according to an embodiment of the present invention is applied.

FIG. 2 is a perspective view showing a portable tape recorder in which the microphone mounting device is adopted.

FIG. 3 is an exploded perspective view showing a mounting device of the microphone.

FIG. 4 is a vertical cross-sectional view showing the attachment device of the microphone.

FIG. 5 is a plan view showing a cushion plate constituting the microphone mounting device.

FIG. 6 is a vertical cross-sectional view showing a conventional microphone mounting device.

FIG. 7 is a plan view showing a conventional microphone mounting device.

[Explanation of symbols]

1 Microphone Mounting Device 3 Microphone Unit 4 Cushion Plate (First Elastic Support Member, Second Elastic Support Member) 5 Storage Case 9 Cassette Holder Lid (Support Member) 9A Opening 10 Cassette Holder Substrate (Support Plate) 10A Aperture

Claims (2)

(57) [Claims] 1. A microphone unit, a storage case for storing the microphone unit therein, a first elastic support member for supporting the microphone unit, a second elastic support member for supporting the storage case, and a storage case. A support member provided with an opening to be disposed, a support plate having an opening facing the bottom surface side of the storage case and sandwiching the second elastic support member with the support member, the storage case and the support A second elastic support member that closes a gap formed between the storage case and the support member. The second elastic support member closes a gap formed between the storage case and the support member. The microphone mounting device is characterized in that it shuts off vibration noise and the like that sneak into the microphone unit from the bottom side of the storage case. 2. The first elastic support member and the second elastic support member are integrally formed.
Microphone mounting device described.